Finding the Third Proportional to 787,866 and 1,728,912

Step by Step Solution

1. Step 1: Write the proportion equation
   787,866 : 1,728,912 = 1,728,912 : x
2. Step 2: Convert to fraction form
   787,866/1,728,912 = 1,728,912/x
3. Step 3: Cross multiply
   787,866x = 1,728,912 × 1,728,912
4. Step 4: Simplify right side
   787,866x = 2,989,136,703,744
5. Step 5: Solve for x
   x = 2,989,136,703,744/787,866
6. Step 6: Final answer
   x = 3,793,965.86